[arin-ppml] ARIN 2-Byte ASN inventory and issuance

Brian Jones bjones at vt.edu
Fri Apr 8 16:39:35 EDT 2016


I believe the current practice is sufficient for now. If a sudden run on
2-byte ASN's occurs this issue should be resurrected at that time.

--
Brian
​ E Jones​

--
Brian

On Fri, Apr 8, 2016 at 12:06 PM, Andrew Dul <andrew.dul at quark.net> wrote:

> Do other members of the ARIN community believe that the current policy and
> operational practice is sufficient for now, or are there policy changes
> needed at this time?
>
> Thanks,
> Andrew
>
> On 4/7/2016 12:24 PM, Scott Leibrand wrote:
>
> Thanks, John.
>
> It sounds to me like ARIN is already doing the right thing (saving 2-byte
> ASNs for people who specifically want them), and that is sufficient for the
> time being.  It does not appear that additional restrictions on who may
> request a 2-byte ASN are necessary at this time.  If at some point 5+ years
> down the road the rate of 2-byte ASN demand starts to exceed the recovered
> supply and the 2-byte ASN inventory is depleted, we can consider a waiting
> list and/or technical requirements for requesting a 2-byte ASN at that time.
>
> Is there any other reason we need to consider taking action sooner?  Was
> there something else I'm missing that prompted ARIN staff to start the
> consultation process around a 2-byte ASN waiting list?
>
> -Scott
>
> On Thu, Apr 7, 2016 at 11:44 AM, John Curran <jcurran at arin.net> wrote:
>
>> Folks -
>>
>> Please forgive this omnibus email of information, but we've had
>> sufficient individual
>> questions for 2-byte ASN data that it simply made more sense to provide
>> one full
>> summary rather than reply to each question individually...
>>
>> ARIN continues to have classic, 2-byte, AS numbers in inventory. Over the
>> last few
>> years, we have received small blocks of them in our new delegations from
>> the IANA,
>> obtained them from customer returns of AS numbers, or through revocations
>> of AS
>> numbers due to non-payment of registration fees.
>>
>> Our last AS block delegation from IANA was on 29 April 2015.  We received
>> 99 2-byte
>> ASNs and 925 4-byte ASNs at that time, and do not expect to receive any
>> additional
>> 2-byte ASNs from the IANA in future delegations.  The 2-byte ASNs
>> received from the
>> IANA in 2015 were added to the inventory and placed on hold.  The reason
>> that the
>> 2-byte ASNs were put on hold is that was not responsible to issue from
>> the dwindling
>> quantity of these resources to parties that did not specifically request
>> such while we
>> were still receiving AS number requests specifically asking for 2-byte AS
>> numbers.
>>
>> As of today, we currently have the following 2-byte ASNs in ARIN
>> inventory:
>>
>>        387 2-byte AS numbers on hold (most were routed at some point)
>>        535 2-byte AS numbers revoked
>>        133 2-byte AS numbers returned
>>
>>   = 1,055 2-byte AS numbers returned/revoked/held (Total)
>>
>> Customers requesting ASNs receive a 4-byte ASN by default.  If a request
>> comes in
>> that specifically requests a 2-byte ASN, we inform the customer that we
>> have noted
>> their special request and that we will accommodate it at the issuance
>> phase of the
>> ticket process if we have 2-byte ASN available at that time.
>>
>> Rate of issuance for 2-byte ASNs per month -
>>
>>     1/2015: 68
>>     2/2015: 77
>>     3/2015: 74
>>     4/2015: 60
>>     5/2015: 7
>>     6/2015: 12
>>     7/2015: 16
>>     8/2015: 4
>>     9/2015: 7
>>     10/2015: 11
>>     11/2015: 7
>>     12/2015: 11
>>     1/2016: 5
>>     2/2016: 6
>>     3/2016: 13
>>
>> A waiting list will only be applicable after depletion of the present
>> 2-byte ASN inventory,
>> hence the following general run-out estimates are provided for
>> consideration:
>>
>>    - If we release all of the 2-byte ASNs from hold and issue ASNs
>> strictly from smallest
>>      to largest, i.e. the practice prior to May 2015, it is likely that
>> the current inventory of
>>      2-byte ASN’s would last somewhere between 6 to 12 months.
>>
>>   -  If we continue the current approach (wherein 4-byte ASNs are issued
>> by default and
>>      2-byte ASNs are only issued upon special request), the current
>> inventory of 2-byte
>>      ASNs would appear to last for many years (5+ years at present rate).
>>
>> I hope the above information helps in your policy development efforts!
>>
>> Thank you,
>> /John
>>
>> John Curran
>> President and CEO
>> American Registry for Internet Numbers (ARIN)
>>
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>
>
>
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